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ODA NEX Series User Manual

Programmable dc power supply
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Programmable DC Power Supply
NEX
Series
User Manual
Manual Part NO. 01 - NEX

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Summary of Contents for ODA NEX Series

  • Page 1 Programmable DC Power Supply Series User Manual Manual Part NO. 01 - NEX...
  • Page 2 The material contained in this document is provided “as is,” and is subject to being changed, without notice, in future editions. Further, to the maximum extent permitted by applicable law, ODA disclaims all warranties, either express or implied, with regard to this manual and any information contained herein, including but not limited to the implied warranties of merchantability and fitness for a particular purpose.
  • Page 3 The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions, instructions, or specific warnings in this manual violates safety standards of the product. ODA Technologies has no liability for the failures in line with these requirements. General Do Not Modify the Instrument...
  • Page 4 Safety Symbol Direct current Alternating current Both direct and alternating current Three phase alternating current Earth (ground) terminal Protective earth ground terminal Frame or chassis terminal Terminal is at earth potential Neutral conductor on permanently Line conductor on permanently installed installed equipment equipment Power On...

  • Page 5: Table Of Contents

    NEX Series Operating Manual CONTENTS 1. General Information 1-1. Feature ------------------------------------------------------------- General Feature Remote Interface Characteristics Calibration Factory Function Self Test Characteristics Self Test Characteristics Applications 1-2. Accessories and Options ---------------------------------------------- Accessories Options Homepage reference (www.odacore.com) 1-3. Inspecting the Unit...
  • Page 6 NEX Series Operating Manual 3-3. Programming Over Voltage Protection(OVP) ----------------------- 3-4. Programming Over Current Protection(OCP) ---------------------- 3-5. Programming Under Voltage Limit(UVL) ------------------------ 3-6. Programming Over Voltage Limit(OVL) ------------------------ 3-7. Programming Under Current Limit(UCL) ------------------------ 3-8. Programming Over Current Limit(OCL) ------------------------ 3-9.
  • Page 7 NEX Series Operating Manual 5. Calibration --------------------------------------------------------------- 5-1. Characteristics ------------------------------------------------------------------- 5-2. Preparation for Calibration ------------------------------------------------ 5-3. Equipments required for Calibration ------------------------------------- 5-4. Calibration Technique -------------------------------------------------------- Instruments Connection Drawing Electronic Load Current-Monitoring Resistor(shunt) DVM(Digital Volt Meter) Programming Measuring Point 5-5. Calibration Using Front Panel...
  • Page 8 NEX Series Operating Manual 6-11. CAL-BACKUP --------------------------------------------------- CAL-BACKUP Operating 6-12. CAL-DEFAULT --------------------------------------------------- CAL-DEFAULT Operating 6-13. LOAD DEFAULT --------------------------------------------------- LOAD DEFAULT Operating 7. SCPI COMMAND ----------------------------------------------------------- 7-1. Commands Syntax ---------------------------------------------- 7-2. Commands --------------------------------------------------------- Output Setting Commands Measurement Commands Calibration Commands Factory Commands System Commands 7-3.

  • Page 9: General Information

    1. General Information 1-1. Feature Nex Series is a programmable switching DC power supply with 600W~10,000W of capacity. It is highly efficient with high performance and is equipped with RS-232C, RS-485, TCP/IP interface based on SCPI (Standard Commands for Programmable Instruments) protocol.

  • Page 10: Applications

    Accessories ▌AC input cord 1pc. (1.5M) ▌Rack mount support (Option) ▌Spare Fuse 1pc. ▌Operating Manual ▌Demo Software (Windows application manual included) Available on ODA website http://www.odacore.com Option ▌RS232C Calbe 1M, 2M, 4M ▌RS485 Cable 2/4/8-Channel 1M, 2M, 4M, 10M ▌AC Input Cable (Special order type) ▌Output Cable (Special order type)

  • Page 11: Inspecting The Unit

    Warranty information is shown in the front of this manual. Keep the original packing materials in case the power supply has to be returned to ODA Technologies in the future. If you return the power supply for service, attach a tag dentifying the owner and model number. Also include a brief description of the problem.
  • Page 12 NEX Series Operating Manual 1-5. Check before AC Input Check Output terminals ▌Check for Sensing input terminal socket <Figure 1-1> WARNING The floating voltage more than ±60Vdc from the product's case can be an electrical hazard to the operator. Please prevent the floating voltage by connecting (+)output terminal with (+)sensing terminal and (-)output terminal with (-)sensing terminal.

  • Page 13: Check Before Power On

    NEX Series Operating Manual Check Power cord ▌Your power supply is equipped with a 3-wire grounding type power cord; the third conductor being the ground. The power supply is grounded only when the power line cord is plugged into an appropriate receptacle.

  • Page 14: Check After Power On

    NEX Series Operating Manual 1-6. Check After Power On The power-on test includes an automatic self-test that checks the internal microprocessors and allows the user visually to check the display. You will observe the following sequence on the display after pressing the front panel power switch to on.

  • Page 15: Installation

    0 °C to 40 °C, and with derated output current from 40 °C to 55 °C. A fan cools the power supply by drawing air through the rear panel and exhausting it out the sides. Using an ODA rack mount will not impede the flow of air. <Figure 1-4 Bottom view>...
  • Page 16 NEX Series Operating Manual ▌Fasten between rack bracket and rack case by using a bolt <Figure 1-6> ▌To install instruments in a sliding support shelf, order support shelf and slide kit and can be installed easily. <Figure 1-7> - 16 -...

  • Page 17: Front Panel, Rear Panel Composition & Function

    NEX Series Operating Manual 2. Front Panel, Rear Panel Composition & Function Power Switch Curr Cursor or Menu Change Key Ventilation Slit M Output ON/OFF Key 16 Character,One Line LCD Display IO/Local setting and Error Display Key Error Lamp Protection setting and Front-panel Lock Key...
  • Page 18 NEX Series Operating Manual A. Power Switch The power supply is turned on or off by this switch. It is adopted by following power supply's capacity. B. Ventilation slit. Air flow flows from front ventilation slit to rear ventilation slit compulsorily.

  • Page 19: Front Panel Setting

    NEX Series Operating Manual O. IO/Local Setting and Error Display Key Configures the power supply for remote interfaces(Choose RS232C, RS485 or TCP/IP) This key can be used to change to Local Mode from Remote Interface state. Displays error codes generated during operation and self-test. Automatically convert to IO/Local key.
  • Page 20 NEX Series Operating Manual 2-1. Front-Panel setting of Voltage and Current You can set the voltage and current limit values from the front panel using the following method. 1. Confirm the display of "OUTPUT OFF" on the LCD after turning on the power supply.

  • Page 21: Rear Panel Composition

    NEX Series Operating Manual 2-2. Rear Panel Composition AC Input + Voltage Sensing Input connector Earth Ground - Voltage Sensing Input connector RS485 Termination Switch Analog Input & Output Calibration Port RS485 Interface Port RS232C Interface Port Ventilation Slit + Output bus bar - Output bus bar A.
  • Page 22 NEX Series Operating Manual H. - Output Bus bar Negative DC power output bus bar of power supply I. + Voltage Sensing Input connector Input terminal of positive output voltage sensing. For more informaiton, refer to 3-3. Remote J. - Voltage Sensing Input connector Input terminal of negative output voltage sensing.

  • Page 23: Output Check

    NEX Series Operating Manual 2-3. Output Check The following procedures check to ensure that the power supply develops its rated outputs and properly responds to operation from the front panel. For complete performance and Voltage Output Check ▌The following steps verify basic output voltage functions with no load.

  • Page 24: Front Panel Operation

    NEX Series Operating Manual 3. Front-Panel Operation If entering to each function of power supply, it returns or cancels to local mode when you press the IO/Local, Protection, Store, Recall key or leave the power supply without any events after 5 seconds later.

  • Page 25: Constant Voltage Operation(Cv)

    NEX Series Operating Manual 3-1. Constant Voltage Operation (CV) To set up the power supply for constant voltage (CV) operation, proceed as follows. (This operating is the examples that the function of "Last State Mode" is disable.) ▌Turn on the power supply After turned on, check the power supply displays"**OUTPUT OFF**"...

  • Page 26: Constant Current Operation(Cc)

    NEX Series Operating Manual 3-2. Constant Current Operation (CC) To set up the power supply for constant current (CC) operation, proceed as follows ▌Turn on the power suppl After turned on, check the power supply displays"**OUTPUT OFF**" Mode. ▌Connect the DUT to output terminals.

  • Page 27: Programming Over Voltage Protection(Ovp)

    NEX Series Operating Manual 3-3. Programming Over Voltage Protection(OVP) Overvoltage protection guards the load against output voltages that reach a specified value greater than the programmed protection level. Below procedure is for setting the OVP level. Disable the OVP at the Factory Mode.
  • Page 28 NEX Series Operating Manual If the real output voltage is higher than OVP level value, "OVP TRIPPED" message appears on the display. And output voltage and current is dropped to near zero. In order to output the voltage and current, at first remove the DUT from load wire and clear the tripped OVP as like below method.
  • Page 29 NEX Series Operating Manual ▌When occurs OVP trip, "OVP TRIPPED" message appears on the display ▌In order to clear tripped OVP, increase the OVP Level. In order to increase OVP level, press the "Protection" key PROTECT> 1.OVP LCD Display ▌In the "protect> 1.ovp ", press the "Protection" key one more time.

  • Page 30: Programming Over Current Protection(Ocp)

    NEX Series Operating Manual 3-4. Programming Over Current Protection(OCP) Overcurrent protection guards the load against output currents that reach a specified value greater than the programmed protection level. Below procedure is for setting the OCP level. Disable the OCP at the Factory Mode.
  • Page 31 NEX Series Operating Manual If the real output current is higher than OCP level value, "OCP TRIPPED" message appears on the display. And output voltage and current is dropped to near zero. In order to output the voltage and current, at first remove the DUT from load wire and clear the tripped OCP as like below method.

  • Page 32: Programming Under Voltage Limit(Uvl)

    NEX Series Operating Manual 3-5. Programming Under Voltage Limit(UVL) Normally, you can adjust the voltage from 0V to maximum voltage but if you set the UVL level, you can adjust the voltage from UVL level to maximum voltage. ▌Turn on the power supply After turned on, check the power supply displays"**OUTPUT OFF**"...

  • Page 33: Programming Over Voltage Limit(Ovl)

    NEX Series Operating Manual 3-6. Programming Over Voltage Limit(OVL) Normally, you can adjust the voltage from 0V to maximum voltage but if you set the OVL level, you can adjust the voltage from 0V to OVL level. ▌Turn on the power supply After turned on, check the power supply displays"**OUTPUT OFF**"...

  • Page 34: Programming Under Current Limit(Ucl)

    NEX Series Operating Manual 3-7. Programming Under Current Limit(UCL) Normally, you can adjust the current from 0V to maximum current but if you set the UCL level, you can adjust the current from UCL level to maximum current ▌Turn on the power supply After turned on, check the power supply displays"**OUTPUT OFF**"...

  • Page 35: Programming Over Current Limit(Ocl)

    NEX Series Operating Manual 3-8. Programming Over Current Limit(OCL) Normally, you can adjust the current from 0V to maximum voltage but if you set the OCL level, you can adjust the current from 0A to OCL level. ▌Turn on the power supply After turned on, check the power supply displays"**OUTPUT OFF**"...

  • Page 36: Programming Over Temperture Protection(Otp)

    NEX Series Operating Manual 3-9. Programming Over Temperature Protection(OTP) It is a function to stop the output when the unit's temperature is higher than OTP Level It is to prevent the load from the power's malfunction. Adjusting OTP Level and On / Off function is described below.

  • Page 37: Key Lock

    NEX Series Operating Manual 3-10. Key Lock Locking or unlocking of front panel's operating state. The locking function can be used to disable the knob, thereby preventing any unwanted changes during an experiment, or when you leave the power supply unattended.

  • Page 38: Io/Local

    NEX Series Operating Manual 3-11. IO/Local To configure the power supply for the RS-232, RS485 and TCP/IP interface. RS232C, RS485 interface is standard, in case of TCP/IP, it is optional. When the power supply is shipped, I/O interface is set the RS232C protocol and baud rate is 9600bps.

  • Page 39: Rs232C Configuration

    NEX Series Operating Manual RS232C Configuration ▌RS232C & RS485 are fixed as following. Data Bit : Stop Bit : Parity Bit : None ▌RS232C Data frame Stop Start 8 Data Bits ▌In order to connect the power supply of RS485 type, Standard cross cable of female type is required.

  • Page 40: Rs485 Setting

    NEX Series Operating Manual RS485 Setting It is possible to control up to 255 devices include remote device after connected each devices by parallel interface method. RS485 setting procedure. ▌Turn on the power supply After turned on, check the power supply displays"**OUTPUT OFF**" Mode.
  • Page 41 NEX Series Operating Manual RS232C Configuration 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 RS232C RS485 RS232C / RS485 RS485 NOT CONNECTED NOT CONNECTED DATA- (RS485) DATA- (RS485) RX (RS232C) NOT CONNECTED...

  • Page 42: Rs485 Configuration

    NEX Series Operating Manual RS485 Configuration ▌In order to connect between RS485 line and remote device as like PC or PLC, you need extra wire that below figure connection. Refer to Figure. 3-5. < Figure 3-5 > < Figure 3-5 >...

  • Page 43: Tcp/Ip Setting

    NEX Series Operating Manual TCP/IP Setting Module speed is 10/100Mbps and intra network PC is standard. Also if you connect the instrument to the fixed IP address, it will automatically obtain an IP address from the network. And you can control the instrument anywhere in the world.
  • Page 44 NEX Series Operating Manual ▌Appear "Subnet Input" message briefly and then, change to subnet mask input > SUBNET INPUT screen. LCD Display >255.255.255.0 ▌Input the subnet mask by using cursor and encoder knob. ▌After finishing inputing, press "IO/Local" key. ▌Appear "Gateway Input" message briefly and then, change to gateway input screen >...
  • Page 45 NEX Series Operating Manual ▌By using cursor key, set the "2.DHCP" and then press the "IO/Local" key TCP/IP Port setting must be equal with PC LCD Display >PORT 5000 Or it may differ depending on previous state. ▌You can change the device number by using encoder knob.

  • Page 46: Analog Remote Interface Setting(Option)

    NEX Series Operating Manual Analog Remote Interface Setting(Option) Power supply can be controlled through Analog Input function and output can be monitored through Analog Output function. Also output ON/OFF function provides 4 methods and can be set through below methods.
  • Page 47 NEX Series Operating Manual Analog Input Voltage Span Setting You can control output voltage proportionally to 0~5V of input voltage. You can set voltage Span at maximum input volatge of 5V. The ways for the setting is as below. ▌Move switch on SW2 to STOP Please refer to "4-2.
  • Page 48 NEX Series Operating Manual Analog Input Current Span Setting You can control output current proportionally to 0~5V of input voltage. You can set current Span at maximum input volatge of 5V. The ways for the setting is as below. ▌Move switch on SW2 to STOP Please refer to "4-2.
  • Page 49 NEX Series Operating Manual Delimiter You can choice the sending and responsing data delimiter among LF, CR and CRLF and when we are shipped, default value is LF. Next is setting procedure ▌Turn on the power supply After turned on, check the power supply displays"**OUTPUT OFF**" Mode.

  • Page 50: Limit Display

    NEX Series Operating Manual 3-12. Limit Display Shows voltage and current limit values on the display and allows knob adjustment for setting limit values. When you press the "Limit Display" key, LMT Lamp is turned on. If it is dark, the power supply is under the readback display or output off state.

  • Page 51: Store

    NEX Series Operating Manual 3-13. Store You can store up to ten different operating states(Output ON/OFF state, Voltage, Current, OVP, OCP, UVL, OVL, UCL, OCL) in non-volatile memory. The following steps show you howto store an operating state. Store Key can be used to calibrate the power supply.

  • Page 52: Recall

    NEX Series Operating Manual 3-14. Recall You can recall up to ten different operating states(Output ON/OFF state, Voltage, Current, OVP, OCP, UVL, OVL, UCL, OCL) in non-volatile memory. The following steps show you how to recall an operating state. Recall Key can be used to FACTORY function.

  • Page 53: Output On/Off

    NEX Series Operating Manual 3-15. Output ON/OFF Enables or disables the power supply output. This key toggles between on and off. Therefore you can acquire the effect of output on/off without remove the connected DUT. Proceed as follows. ▌Turn on the power supply After turned on, check the power supply displays"**OUTPUT OFF**"...

  • Page 54: Error Message Display

    NEX Series Operating Manual 3-16. Error Message Display When the front-panel ERROR annunciator turns on, one or more command syntax or hardware errors have been detected. A record of up to 10 erros is stored in the power supply’s error.

  • Page 55: Rear-Panel Operating

    NEX Series Operating Manual 3. Rear-Panel Operating This section includes explanations on rear terminals. Remote Voltage Sensing terminal ensures precise voltage being given to the laod. Analog Remote Interface Module (Option) provides V/I control monitoring and 4 different types of output ON/OFF control.

  • Page 56: Remote Voltage Sensing

    NEX Series Operating Manual 4-1. Remote Voltage Sensing Remote voltage sensing is used to maintain regulation at the load and reduce the degradation of regulation that would occur due to the voltage drop in the leads between the power supply and the load.

  • Page 57: Remote Voltage Sensing Connection

    NEX Series Operating Manual Stability Using remote sensing under certain combinations of load lead lengths and large load capacitances may cause your application to form a filter, which becomes part of the voltage feedback loop. The extra phase shift created by this filter can degrade the power supply’s stability, resulting in poor transient response or loop instability.

  • Page 58: Analog Remote Interface Configuration

    NEX Series Operating Manual 4-2. Analog Remote Interface Composition Analog Remote Interface Module is an optional function, and it must be requested with the PO because an additional circuit is being added insided the product. The module is located on the Rear-Panel, and is insulated from the output.
  • Page 59 NEX Series Operating Manual TTL Positive Enable It is disabled, and does not control ON/OFF using TTL Positive Input. It is enabled, so that the output ON/OFF can be controlled by TTL Positive Input Terminal's Low/High Level on TER1. TTL is a Digital signal, reading the Level as Low(0V), and High (5V).
  • Page 60 NEX Series Operating Manual Contact Return Type Switch Input It is a terminal controlling ON/OFF of the output, and it inputs ON-OFF in one cycle. For example, if the output was OFF when input has been given, the output becomes ON. So it changes to the opposite state to the previous output.

  • Page 61: Analog Remote Programming Control

    NEX Series Operating Manual 4-3. Analog Remote Programming Control It enables controlling output V/I by external input voltage. Below is the explanation. Remote Voltage Programming It prgramms 0~100% of output voltage proportianl to 0~5VDC input. Below is the switch and terminal usage for such feature.

  • Page 62: Analog Remote Monitoring

    NEX Series Operating Manual 4-4. Analog Remote Monitoring It enables monitoring output V/I by external input voltage. Below is the explanation. Remote Voltage Monitoring You can check 0~5VDC from the below terminal prportianally to 0~100% output voltage. S/W1 Switch is irrelevant.

  • Page 63: Analog Remote On/Off Control

    NEX Series Operating Manual 4-5. Analog Remote ON/OFF Control It provides 4 modes to control the output ON/OFF. Contact Return Type It is a Contact Return type switch, and Output is ON if the previous state was OFF. Or, if the previous state was ON, the output is OFF. It should be used by repeating the contact.
  • Page 64 NEX Series Operating Manual Contact Type Switch (Direct) It is a switch type that makes Output ON when shorted, and Output OFF when opened. 1.Move SW2 switch to STOP. 2. Move switch 6 on SW1 to ON. 3. Connect External Contact switch to 7 and 10 on TER1.
  • Page 65 NEX Series Operating Manual TTL Negative Input Type It is controlling the unit's ON/OFF using TTL Signal. The output is ON when the signal is Low, and OFF when signal is High. 1. Move SW2 Switch to STOP. 2. Move SW1's switch 8 to ON.

  • Page 66: Fuse

    NEX Series Operating Manual 4-6. Fuse. Below is the explanation of appropriate FUSE for each model, along with the changing method. Appropriate Fuse for each model Watt Fuse Product Series 600Watt 1.2Kwatt NEX 2500 1.8Kwatt 2.4Kwatt 3.6Kwatt 20A 2pcs NEX 5000 4.8Kwatt...

  • Page 67: Calibration

    NEX Series Operating Manual 5. CALIBRATION Warning The person or institute who not only does not have the acknowledge but also is not certificate calibration center should not calibrate the power supply. The calibration is required periodically. * precision use : one time after 180 days.

  • Page 68: Equipments Required For Calibration

    NEX Series Operating Manual 5-3. Equipment required for Calibration We recommend as below measuring instruments in other to calibrate the power supply. Requested performance Recommended Using article Resolution: 0.1 mV Digital Voltmeter Agilent 34401A Voltage Calibration Accuracy: 0.01% Voltage Range: 500 Vdc...

  • Page 69: Dvm(Digital Volt Meter)

    NEX Series Operating Manual Electronic Load. ▌This instrument is for current calibration of ppwer supply. Electronic load is kind of variable resistor. ▌This instrument must have ON/OFF function and itself's short function for testing. ▌When current calibration, connect the power supply (+) output terminal and electronic load...

  • Page 70: Measuring Point

    NEX Series Operating Manual Measuring Point. If you want to acquire the accurate data and result about the power suppyl's load regulation measuring, pk-pk Voltage and response time, you must connect the load resistor to A point of figure. 4-3 and you must connect the measuring instrument at the B point of fighre.4-3 (V-Sensign connecting hole)

  • Page 71: Voltage Calibration

    NEX Series Operating Manual Voltage Calibraton ▌Turn off all device and connect all device before calibration >Connect the power supply (+) output bus bar at the DVM (+) and connect the power supply (-) output bus bar at the DVM (-) ▌Turn on Power switch while pressing calibration key .

  • Page 72: Current Calibration

    NEX Series Operating Manual ▌Enters a voltage value that you obtained by reading an external DVM meter If the value is 31.607V, enters as following below. V-HIGH 31.61V This is an examples for 30V LCD Display ▌After finishing to enter the value, press the "Calibration" key.
  • Page 73 NEX Series Operating Manual ▌Calculate the current when DVM display voltage became stable. If resistor is 0.01Ω and DVM display voltage value is 1.23mV, the current value is 0.123A. ▌Enters a current value that you calculated by using cursor key and encoder knob.

  • Page 74: Calibration By Remote Interface

    NEX Series Operating Manual 5-6. Calibration by Remote Interface This chapter is for remoting calibration method by using remote interface. When you calibrate the power supply under remote interface state, you should not set other command Instruments Connection ▌Before calibrating, connect the all devices like <Figure. 4-2>...

  • Page 75: Current Calibration

    NEX Series Operating Manual Current Calibration ▌Send the "ON" command to electronic load. ▌Send the power supply current minimum calibration command. CAL:CURR MIN Sending command ▌The mode of electronic load is CC mode, so set the current value is higher than the power supply's maximum output ampere value.

  • Page 76: Factory

    NEX Series Operating Manual 6. FACTORY You can set the various convenient function as following calibration restore, backup and etc. by using "FACTORY" mode. 6-1. Characteristics ▌Be able to initialize the 10 non-volatile memory datas as like OVP, OCP and etc.

  • Page 77: User-Mem Clear

    NEX Series Operating Manual 6-3. USER-MEM CLEAR ▌This mode is to initialize the 10 datas of OVP, OCP, UVL and etc in the non-volatile memory at once. ▌After initialized the datas of non-volatile, initialized data never be recovered. ▌Initialized contents >Voltage...

  • Page 78: Last State

    NEX Series Operating Manual 6-4. LAST STATE ▌When you turn on the power supply, you can select the default state or last state of power off. ▌Function > DISABLE When selected this mode, boot the power supply to original default value For the safety, recommend this mode.

  • Page 79: Auto Cursor Mv

    NEX Series Operating Manual 6-5. AUTO CURSOR MV ▌If the power supply doesn't receive any operation by using front-panel within a certain period of time, the power supply's cursor location go down to minimum changing unit automatically when you set the "AUTO CURSOR MV" mode is enable.

  • Page 80: Auto Key Lock

    NEX Series Operating Manual 6-6. AUTO KEY LOCK ▌If the power supply doesn't receive any operation by using front-panel within a certain period of time, the power supply becomes the key lock state automatically when you set the "AUTO KEY LOCK" mode is enable.

  • Page 81: Ovp Use

    NEX Series Operating Manual 6-7. OVP USE ▌Enable or disable the "Over Voltage Protection" function. ▌In case of a like inductivity DUT, motor, big capacity DUT and etc, occurs "OVP trip" frequently so if it is not convenient to use the power supply, you can set disable of "OVP USE" mode.

  • Page 82: Ocp Use

    NEX Series Operating Manual 6-8. OCP USE ▌Enable or disable the "Over Current Protection" function. ▌In case of a like inductivity DUT, motor, big capacity DUT and etc, occurs "OCP trip" frequently so if it is not convenient to use the power supply, you can set disable of "OCP USE" mode.

  • Page 83: Adc Sampling

    NEX Series Operating Manual 6-9. ADC SAMPLING ▌Be able to set the output voltage/current measuring speed and displaying speed ▌If the frequency is lower, data acquisition is reduced. But you can get the more accurate value. ▌If the frequency is higher, data acquisition is increased. But voltage/current measuring value can be changeable frequently in the display.

  • Page 84: Cal-Restore

    NEX Series Operating Manual 6-10. CAL-RESTORE ▌This function is restoring saved calibration data at present system by backup function. ▌You can use this function when the person who have no previous knowledge of calibration operates calibration of the power supply or have an error about calibrtion, and you can return to previous calibration data.

  • Page 85: Cal-Default

    NEX Series Operating Manual 6-12. CAL-DEFAULT ▌This function is to restore to the state of calibration data that shipped from factory. ▌If you calibrate the unit in the condition that you have no previous knowledge of calibration or you can not restore by using "5-10. CAL-RESTORE" function, you can return to factory default calibration data.

  • Page 86: Scpi Command

    NEX Series Operating Manual 7. SCPI Command This section summarizes the SCPI (Standard Commands for Programmable Instruments) commands available to program the power supply over the remote interface. By using interface as following RS232C, RS485 and TCP/IP(Option) you can control the devices so it is fit to FA system and research center.

  • Page 87: Measurement Commands

    NEX Series Operating Manual Measurement Commands MEAS:CURR? MEAS:VOLT? MEAS:ALL? Calibration Commands CAL:VOLT {voltage|MIN|MAX} CAL:CURR {current|MIN|MAX} Factory Commands System Commands FACT:USER-M {CLR} SYST:BEEP FACT:LAST-STA {DIS|SAF|FUL} SYST:ERR? FACT:LAST-STA? SYST:VERS? FACT:AUTO-CUR {DIS|ENA} FACT:AUTO-CUR? OUTP {OFF|ON} FACT:AUTO-LOC {DIS|ENA} OUTP? FACT:AUTO-LOC? FACT:OVP {DIS|ENA} KEYL {OFF|ON}...

  • Page 88: Apply Command

    NEX Series Operating Manual 7-3. Apply Commands The Apply command provides to control the output voltage and current by remote interface. APPLy {<voltage>}[,<current>] The following command can either control both V/I or voltage only. > voltage Enter voltage value > current...
  • Page 89 NEX Series Operating Manual VOLT:OVP {<numeric value>} This command sets the voltage level at which the overvoltage protection circuit will trip. > numeric value Input voltage within OVP setting range. ex) volt:ovp 32 Set the OVP Level to 32V VOLT:OVP? This query returns the overvoltage protection trip level presently programmed.
  • Page 90 NEX Series Operating Manual VOLT:OVL? This query returns the under voltage limit value presently programmed. Return value "numeric value" return value "15.0000" ex) volt:ovl? CURR {<current>|UP|DOWN} This command programs the immediate currenr level of the power supply. The immediate level is the current value of the output terminals.
  • Page 91 NEX Series Operating Manual CURR:OCP:CLE This command causes the overcurrent protection circuit to be cleared. Before release trip, refer to "3-4. Programming Over Current Protection(OVP)" in other to check the reason of trip occuring and remove this reason. Clear the OCP Trip...

  • Page 92: Measure Command

    NEX Series Operating Manual 7-5. Measure Commands Measure commands measure the output voltage or current. MEASure commands acquire new data before returning the reading. Also you don't need DVM(Digital Volt Meter) and ammeter and you can measure voltage and current independently.

  • Page 93: Calibration Commands

    NEX Series Operating Manual 7-6. Calibration Commands Calibration commands let you enable and disable the calibration mode, calibrate current and voltage programming, and store new calibration constants in nonvolatile memory by remote interface. CAL:VOLT {voltage|MIN|MAX} This command is for voltage calibration.
  • Page 94 NEX Series Operating Manual FACT:LAST-STA {DIS|SAF|FUL} When you turn on the power supply, you can select the default state of output DC power. > DIS When this mode is selected , boot the power supply to original default value. > SAF When you turn on the power supply, appears "OUTPUT OFF"...
  • Page 95 NEX Series Operating Manual FACT:OVP? Confirm OVP function value. Return value "0" Disable state "1" Enable state ex)fact:ovp? return value "0" FACT:OCP {DIS|ENA} Enable or disable the "Over Current Protection" function. > DIS Disable "OCP USE" mode. > ENA Enable "OCP USE" mode.

  • Page 96: System Commands

    NEX Series Operating Manual 7-8. System Commands This is the commamd that is various control command of the power supply. SYST:BEEP The event to beep sound of power supply ex) syst:beep Make beep sound. SYST:ERR? Confirm the power supply's error that occurred.
  • Page 97 NEX Series Operating Manual KEYL {OFF|ON} This command is controlling the front panel's key/encoder knob locking or unlocking. > ON Key locking. > OFF Key unlocking ex1) keyl on Key locking. Key unlocking. ex2) keyl off KEYL? Confirm controlling the front panel's key/encoder knob locking or unlocking state.
  • Page 98 NEX Series Operating Manual *CLS Clear the all error event. ex) *CLS *RST This command is initializing of the power supply. Following is initializing contents. > Output > Voltage Limit > Current Limit Maximum current value of the power supply.

  • Page 99: Error Messages

    NEX Series Operating Manual 8. Error Messages About error explanation. You can confirm the error by using front panel's "ERROR I/O Local" key or PC remote nterface.(Refer to "SYST:ERR?" command.) +0,"No error" No error state. 8-1. Operation Error -10, "Invalid the DAC parameter"...
  • Page 100 NEX Series Operating Manual -23, "En route to cal the curr" It appears when sended calibration command about voltage during current calibration. -24, "Over volt min parameter" It appears voltage Min value is over the power supply's voltage limit. Refer to "5. Using Front Panel Calibration."...

  • Page 101: Calibration Error

    NEX Series Operating Manual 8-4. Calibration Error If you do calibration, the power supply also do calibration of readcack. The following errors indicate failures that may occur during a calibration. -74, "ADC-V low limit over" It apprars when calibration of voltage ADC low section is out of range -75, "ADC-V high limit over"...

  • Page 102: Interface Commands Error

    NEX Series Operating Manual 8-6. Interface Commands Error This chapter is for PC interface communicaton error. -120, "Suffix too long" A suffix for a numeric parameter contained too long characters. Maximum memory buffer that you are able to send is 50 byte at only once.

  • Page 103: Specifications

    NEX Series Operating Manual 9. Specifications The performance specifications are listed in the following pages. Specifications are warranted in the temperature range of 0 to 40°C with a resistive load. Supplemental characteristics, which are not warranted but are descriptions of performance determined either by design or testing.
  • Page 104 NEX Series Operating Manual - 104 -...
  • Page 105 NEX Series Operating Manual - 105 -...

  • Page 106: Outside Dimension

    NEX Series Operating Manual 9-1. Outside Dimension 1U 600W~2.5KW Product Outside Dimension 1U 600W~2.5KW Product Rear Feature - 106 -...
  • Page 107 NEX Series Operating Manual 2U 2.6KW~5KW Product Outside Dimension 2U 2.6KW~5KW Product Rear Feature - 107 -...
  • Page 108 NEX Series Operating Manual 4U 5.1KW~10KW Product Outside Dimension 4U 5.1KW~10KW Product Rear Feature - 108 -...
  • Page 109 NEX Series Operating Manual 10. Maintenance (Pre-Cautions) NEX Series does not require periodical cleaning for the maintenance If cleaning is done, it should be done as following: ▌When cleaning, please make sure every air vents including the front panel are free of any liquid. You can clean the exterior with a cloth and water.
  • Page 110 Warranty Service Conditions ▌If the unit's defect is found within 30 days of the unit being delievered, ODA will be in charge of all delievery costs. However, if it has exceeded 30 days, the delivery cost should be charged by the customer prior to the delievery.
  • Page 111 NEX Series Operating Manual 12. Cautions Non compliance with the warnings and/or the instructions for use may damage the instrument and/or its components or injure the operator. Keep following articles. ▌Avoid the installation in severe cold or hot area. ▌Do not use immediately after moved from cold area As liquefaction phenomenon, it gives damage to the power supply After 20~30min later, use the power supply.
  • Page 112 NEX Series Operating Manual 13. ODA Technology Product line-up Programmable DC Power Supply - 112 -...
  • Page 113 NEX Series Operating Manual Reliability, Durability, and Life Span Test System - 113 -...
  • Page 114 ODA TECHNOLOGIES CO.,LTD. 62, Bupyeong-daero 329beon-gil, Bupyeong-gu Incheon city, 403-858, Korea TEL. +82-2-1800-8644 FAX. +82-32-715-5456 www.odacore.com/en/main oda@odacore.com...

This manual is also suitable for:

Nex 2500 seriesNex 5000 seriesNex 10000 series

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